|(A-B) Chirixalus pantaiselatan|
Munir, Hamidy, Kusrini, Kennedi, Ridha, Qayyim, Rafsanzani & Nishikawa, 2021
RAFFLES BULLETIN OF ZOOLOGY. 69;
The Old World tree frog genus Chirixalus is distributed from northeastern India, southern China, continental Southeast Asia to Sumatra and Java. The species of this genus were previously assigned to the genera Chiromantis or Philautus. Here, we describe a newly discovered species of Chirixalus from Java. Chirixalus pantaiselatan, new species, is a small rhacophorid frog (male snout-vent length = 25.3–28.9 mm) that can be distinguished from all congeners using a combination of morphological, molecular, and advertisement call characteristics.
Key words. bioacoustics, Chirixalus, citizen science, taxonomy
|Chirixalus pantaiselatan, new species, MZB. Amph 30547 in night-time (A) and MZB. Amph 30548 in the daytime (B),|
uncollected Chiromantis trilaksonoi (C), and Feihyla vittiger, MZB. Amph 27238 (D).
C & D photographed by Farits Alhadi.
Chirixalus pantaiselatan, new species
Diagnosis. The new species was assigned to the genus Chirixalus based on the following external characters: horizontal pupil, tongue free and deeply notched, distinct tympanum, opposed fingers, toes webbed, tips of fingers and toes dilated into disks, outer metatarsal separated by web, terminal phalanges obtuse (Boulenger, 1893). The new species can be distinguished from its congeners by the combination of the following characters: snout truncate; SVL 25.3–28.9 mm in males; uniform lateral body colouration, without a light dorsolateral stripe from canthus rostralis through upper orbital to the body or a light lateral stripe from under orbital to mid-body; brown dorsal colouration, with an indistinct transverse dark brown patch on intercanthal and upper eyelid to interorbital area continued by an indistinct irregular hexagon-like shape covering the parietoscapular region, and a diamond-like shape on suprascapular region to mid-body; distinct dark brown tympanum; third finger disk diameter about half that of tympanum and unique advertisement call consisting of short (2–9 notes), medium (11–17 notes), and long calls (22–46 notes). Calls are 185.71–1,644.28, 1,420.78–2,708.46, and 3,292.29–7,055.79 ms in duration, respectively, with note durations of 4.14–18.03, 4.82–15.19, and 4.78–24.88 ms, respectively. Dominant frequencies ranging from 2.34–3.94, 2.53–3.75, and 2.72–3.94 kHz for calls of short, medium, and long duration.
Etymology. The specific name is an Indonesian adjective incorporating the words “Pantai,” meaning “coast,” and “Selatan,” meaning “south.” This name refers to the locality of this species in southern Java.
Indonesian Name. Katak-pucat pantaiselatan
Misbahul Munir, Amir Hamidy, Mirza Dikari Kusrini, Umar Fhadli Kennedi, Mohammad Ali Ridha, Dzikri Ibnul Qayyim, Rizky Rafsanzani and Kanto Nishikawa. 2021. A New Species of Chirixalus Boulenger, 1893 (Anura: Rhacophoridae) from the Lowland Forests of Java. RAFFLES BULLETIN OF ZOOLOGY. 69; 219–234